CVE-2020-28895

integer overflow in calloc

Severity Score

7.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Wind River VxWorks, memory allocator has a possible overflow in calculating the memory block's size to be allocated by calloc(). As a result, the actual memory allocated is smaller than the buffer size specified by the arguments, leading to memory corruption.

En Wind River VxWorks, el asignador de memoria presenta un posible desbordamiento en el calculo del tamaño del bloque de memoria que se asignará por medio de la función calloc(). Como resultado, la memoria real asignada es menor que el tamaño del búfer especificado por los argumentos, conllevando a una corrupción en la memoria

*Credits: Reported by Omri Ben Bassat <v-obenbassat@microsoft.com>

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-11-17 CVE Reserved
2021-02-03 CVE Published
2023-10-20 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-190: Integer Overflow or Wraparound
CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://www.oracle.com/security-alerts/cpuapr2022.html	2022-05-12

URL	Date	SRC
https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2020-28895	2022-05-12

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Windriver Search vendor "Windriver"		Vxworks Search vendor "Windriver" for product "Vxworks"				>= 6.9 < 6.9.4.12 Search vendor "Windriver" for product "Vxworks" and version " >= 6.9 < 6.9.4.12"		-		Affected
Windriver Search vendor "Windriver"		Vxworks Search vendor "Windriver" for product "Vxworks"				6.9.4.12 Search vendor "Windriver" for product "Vxworks" and version "6.9.4.12"		-		Affected
Windriver Search vendor "Windriver"		Vxworks Search vendor "Windriver" for product "Vxworks"				6.9.4.12 Search vendor "Windriver" for product "Vxworks" and version "6.9.4.12"		rolling_cumulative_patch_layer1		Affected
Oracle Search vendor "Oracle"		Communications Eagle Search vendor "Oracle" for product "Communications Eagle"				>= 46.8.0 <= 48.6.2 Search vendor "Oracle" for product "Communications Eagle" and version " >= 46.8.0 <= 48.6.2"		-		Affected
Oracle Search vendor "Oracle"		Communications Eagle Search vendor "Oracle" for product "Communications Eagle"				>= 46.9.1 <= 46.9.3 Search vendor "Oracle" for product "Communications Eagle" and version " >= 46.9.1 <= 46.9.3"		-		Affected
Oracle Search vendor "Oracle"		Communications Eagle Search vendor "Oracle" for product "Communications Eagle"				46.7.0 Search vendor "Oracle" for product "Communications Eagle" and version "46.7.0"		-		Affected